31298413 has 2 divisors, whose sum is σ = 31298414. Its totient is φ = 31298412.

The previous prime is 31298357. The next prime is 31298417. The reversal of 31298413 is 31489213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19554084 + 11744329 = 4422^2 + 3427^2 .

It is a cyclic number.

It is not a de Polignac number, because 31298413 - 2¹³ = 31290221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31298417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15649206 + 15649207.

It is an arithmetic number, because the mean of its divisors is an integer number (15649207).

Almost surely, 2^31298413 is an apocalyptic number.

It is an amenable number.

31298413 is a deficient number, since it is larger than the sum of its proper divisors (1).

31298413 is an equidigital number, since it uses as much as digits as its factorization.

31298413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 31.

The square root of 31298413 is about 5594.4984583071. The cubic root of 31298413 is about 315.1428360362.

The spelling of 31298413 in words is "thirty-one million, two hundred ninety-eight thousand, four hundred thirteen".